Sleeping-car-heating system.



E. 11.901,13. SLEEPING GAR HEATING SYSTEM. APPLICATION FILED JUNE 7, 1909.

Patented Mar. 21, 1911.

4 SHEETS-SHEET ll.

GOLD. SLEEPING GAB HEATING SYSTEM.

APLIATIO IILLD JUNE '1, 1909.

Patented Mar. 2, 1911.

' 4 SHEETS-SHEET 2.

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E. H. GOLD.

SLEPING GAR HEATING SYSTEM.

. APPLIUATION FILED JUNE?, 1909.

987,565. 1 Patented Mar.21,1911. v

4 SHEETS-SHEET 3.

fn?" fj v E. H. GOLD.

SLBEHNG UA1. Hmmm SYSTEM.

APPLUATION FILED `TUNE 7, 1909. 987,565, Patented Mar. 21, 1911..

4 SHEETS-SHEET 4.

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EGBERT-H. GOLD, 0F-UHICAGO, ILLINOIS.

SLEEPING-GAR-HEATING SYSTEM.

Specification of Letters Patent. Patented Dial'. 21, 1911.

Application mea :une y7, 190s. serial no. 500,477.

To all whom 'it may concern:

Be it known thatl, EGBERT'H. GOLD, .a citizen of the United States, residing at Chicago, inthe county of'Cook and State of Illinois, have invented certain new and useful Improvements in Sleeping-Car-Heating Systems, of which the following is 'a specification. i

My invention relates to a-heating system designed and intended particularly for heating railway cars and theinvention has for its object to provide a heating system which is primarily automatic in its operation, but which is capable of a certain amount or arbitrary regulation, by means of which the amount-off1 effective radiation may be varied so as to produce, for example, more heat in Aso the daytime than at night, oran increase of heat over the normal in very'severe weather, or so as to vary at will the temperature in different compartments of the same car.

While the arrangement of radiating coils, valves and controlling'devices which forms the subject matter of this application might be employed to some advantage in a variety of heating systems, the arrangement is designed particularly for atmospheric pressure or vapor systems of car heating and more particularly for the vaporcsystem as applied to sleeping cars; and in this regard it is one of the objects of my invention to adapt the vapor system to the needs and requirements of sleepingcars and the like.

' The invention involves the use in conjunction of a primary `radiator and a secondary radiator, the secondary radiator Ycomprising one or more radiator units, the circulation through which radiators is preferably controlled by a single thermostatic controller. This arrangement, broadly speaking, is shown in my 4application iiled November 23, 1908, Serial No. 464,057, in which, however, the two'coils orradiators, when both are used, are in parallel. This arrangement necessitates theus of some device for compelling the steam to pass through the 4secondary coil when it is rstopened, the tendencybeing-for the steam t'o follow its old course through' the hot pipes and so interfere with the intended conjoint operation of the coils. The presentI invention provides for .an arrangement of two radiators in series with suitable val'es interposed, whereby the steam may be circulated either through the prima radiator` alone and thence.to the controleror through thetwo radiators serially, thus insuring 'the lling of both radiators when both are used, before the control- ,ling thermostatis actuated to diminish the supply.

I The invention has for a further object to provide a heating system of the sort described which shall be simple in const-ruclers so that it is economical to install and so tion, requiring but a few valvesand controlthat its operation will be easily understood by the attendant having charge of the same. The invention has for further objects such new and improved devices, constructions and arran ements-in heating systems, and particular y sleeping car heating systems as will be described in this specification and particularly set -forth in the claims appended thereto'. The invention in a preferredembodiment is illustrated in the accompanying drawings, wherein- Figure 1 1s a fragmentary sectional plan Vof a sleeping car, the arrangement of the radiating pipesbeing, however, somewhat conventional for thepurpose of clearer illustration. Fig. 2 is a Asectional plan through the four-way valves employed to connect the radiating units. Fig. B is a sectional view taken on line 3 3 of Fig. v@looking in the direction of the arrows. Fig. 4 is a vertical sectional view-of a vapor regulator suitable for use `1n the heating system of the present invention. Fig. 5 is a sectional plan view illustrating a modified form of the invention employing two units in the secondary radiator.

Like characters of reference indicate like partsin the several figures of the drawings.

Referring to the drawings, A represents the center 'partof a sleeping car of ordinary construction.v o ,f

a are the car seats.

B is the steam train pipe which runs the length of the train and is kept filled with steam from the locomotive at high but varying pressures. i

The car is heated by two sets of radiating l I coils, one onneach side of the car. As these lsets of coils and their valves and controllers are the same for both sides of the car, it will be necessary'to describey only one set. Each set consists l,of a primary radiator-C and a supplemental or secondary radiator D. The primary coil or radiator, preferably, extends the whole length of the car and is intended to. impart sulcient heatpin all weather to the inio'wto the radiators in accordance i.

- with thermostatic conditions ate their outlet from both of the coils.

' turn pipe of the primary coil Cy and 'the 'inlet keep the water pipes and the like in the car from freezing up, and to keep up the normal v temperature in the car in moderate Weather` Coil C will ordinarily be sufficient toheat the car at night even in quite cold Weather as it is not necessary nor desirable to have the Itemperature of a sleeping caras high during the sleeping hours as at other times.

,f The secondary coil or radiator D runs along be utilized to supply additional heat.

through the berth section of the car andP cafn re erably, a controller is employed for maintaining the steam-in one or both of the coils at uniform pressure. A four-Way valve'F is interposed between the controllenjthe v1nlet to the primary coil and the common outand return ends of the secondary coil D.

I Will now describe the construction of the controller and the four-Way valves and their arrangement in the heating' systenn The controller, if one be used, maybe any form of automatic controller for-.regulating being connected with theoperating rod 20 of the thermostat 21, the'rod and thermoleads from chamber 13- stat being inclosed in a suitable casing 22'.

The four-Way valvesF, F are identical in construction. A casing 23 is divided by the Webs 24, 25, 26 and 27 intochambers 28,

29, 30, 31.- BetWeenthe Webs is set a valve piece consistingof the upper and lower dlsks 32, 33, respectively, connectedby the vertical Web 34, these parts being arranged on a ,stem`35l having a handle 36;. a spring 37 beingv interposed between the upper disk 32 and tliggbonnet 38. `The lower disk is perforatedat 39 and this perforation registers with a 4perforation 40 inthe bottom of the casing' when the web 34 is in the full line postlon of-thevalveF in Fig. 2.-

A pipe 41 leads from train pipe B to.

chamber 12 of the controller. A pipe 42 y to the compartment 2 8 o f the valve F. A pipe43 connects compartment 31 of valve F with the thermostat x'zharnber'22,v The inlet pipe 44 of `coill C `leads from'com-partment 29 .of valve F and.

the return end 45 of the coil to the comparti-v ment 28 of valve F. .AI ipe 46 'connects 'compartment 31 of F' wit 30 of F. l The co11'D` leads from and is returned to, re-

spectively, compartments. 29 and 30 of valve A second viour.-

F. It will be understood that the arrangement of the heating coils shown 1n F 1g.v 1

is diagrammatic for the purposes of illustration and not intended to 'be exactly followed are shown in horizontal arrangement-merely for the purposeof illustrating in one view v all of the elements of the system.

The operation of 'the heating system above described isas follows: With the valves set -as Showninthe full lines'in Fig. 2 the steam twill liowthrough 'port-14,'pass valveI 15 of ythe controller through compartments 28 and 29- of valvej'F, through radiator C, thence through compartments 28 and 3L of valve .compartments ,and 31 of valveF and then tothermostat 21. The action of the steam on' the thermostat will expand the same, closing or throttling valve 15 so-"as to'regula'te the iniioiv of steam to coil C in accordance with its needs.

tomati'cally kept Afull of steam at atmospheric pressure. In cold Weather, when the -cendensation amount of steam will pass the valve 15 to isl more nrapid, a greater make up foi-the increased loss by condensation. The coil .C is designed to give oill 'suiicient heat to keep the Water pipes and moderately cold Weather7 the danger of freezing of the waterpipes is prevented. It often 'happens that When anattendant has allowed a car to become' too hot hel tries to remedy the difficulty by shutting off the steam entirely, with the result that with a sudden fall of the temperature a freezing of the Water pipes takes place.

, The secondary radiator D is putinto service Whenheat is required in excess ofthe capacity of radiator C, as -in very cold Weather, and particularly during the daytime. It is acommon complaint that sleepingcars vare unduly heated at night and particularly.duringthe i'rst part .of the night. This results from the fact that no eticient means isprovided` for reducing the amount' of radiating surface under steam The coils are auduring the sleeping hours. By the present system both co11s`C and D may be cut out or c oil C alone retained Iin service during the sleeping hours. When both vcoils are active, the valve F will be set with'the valve pleceinthe position indicated by the dotted lnes 1n Flg.` 2. Compartment 28 will be put into communication with compartment 29 and compartment 30 with compartment 31. Communication is now closed between com artment 28 and 31 so that the steam i disc vurged. from coil C will be compelled Y `the controller will remain open until steam is forced from coil through coil D. When the valve piece of valve F is turned back so to by-pass coil D the perforation 39 in disk 33 will register with the perforation 40 in the bottom of the valve casing so as to open a drip out-let from the said coil.

In Fig. 5 l have shown a modiiied for of apparatus in which, the secondary radiator Consists of two radiator units, so Connected that steam from the return end of coil C 'y may be made to pass through either one ot' these secondary units, or tlirougn both ot the same in series; provision being alst` made for short circuitiiig both of the secondary units so that steam from the coil C may, at will, be caused to pass directly to the thermostat. The application of this modified form ot the' invention to a car, to provide separate radiation for particular compartments or for any other purpose, will be obvious Without further illustration.

f Referring noivto Fig. 5, it will be seen that iii the return end 47 ot the primary ooil C are interposed two four-way' valves F', F2. To these valves are connectedth inlet and return ends of, respectively, the

secondary radiator units D, D. Preferably, the tour-way valve F is interposed in the common return pipe 4S, the inlet end 49 of coil C being connected with this valve and also the common supply pipe 50. The same sort of theriiiostatic controlling device as is used in the previously described form of apparatus may be employed in the moditied system. It will be seen that either secondary radiating unit D or D may be connected up ivitli coil C, or short circuited, as desired. lVhen both D and D are in service the steam is forced to lioiv through the saine in series. By closing valve F all of the coils may be cut out, the steam from the inlet valve of the controller in such case iioiving immediately through to its thermostat chamber, thereby at a'll times preventing freezing ot water of condensation in the controller which is preferably exposedbeneath the car to insure sensitive action of the thermostat in response to changes in Weather conditions.

, The arrangement of the primary and sec-- ondary radiators and of the valves which Vcontrol the flow of steam therethroughA is such that the secondary radiator in each case cannot be used except when its primaryv radiator is under steam. Therefore, it is impossible to inadvertently use the secondary radiator and so run the risk of freezing `Water pipes and the like in parts of the car to which the primary radiatoralone extends, it being understood that one of the functions ofthe primary radiators, and these radiators are located with that in View, is to protect `Water pipes and the like from freezing.

As hereinbetore indicated the secondary radiator may consist of a .single radiator unit 'from Which the steam may be conducted directly to the thermostat, asillustrated by Fig.v 2; or it may consist of a plurality of radiator units to either of which the steam trom the primary radiator may be y conducted directly, and thence directly to the thermostat, or to one of which the steam trom the primary radiator may be conducted and-thence to said thermostat, either vdirectly, or indirectly through the other'ot said secondary radiator units. By the language occuring in some ot the claims to the ettect that the steam is circulated through a secondary radiator unit and thenceto the thermostat, and .by expressions ot-like iinport, unless otherwise qualilied, I Wish tobe understoodas including both forms of the device; the form in Which the steam `:from `a secondary radiator thermostat directly, as illustrated byl Fig. 2,

unit is conducted. to. the'- so'l or in which the steam froma secondary Y radiator unit may be conducted to said ther,-

'mostat either directly or indirectly through.

other secondary radiator'units, as illustrated by Fig, 5. v

I do notv limit myself to the particular devices, constructions Yand arrangements shown, as' modifications might' be devised which would come Within the scope of my invention as defined by the claims.

I do not claim the parallel arrangement of coils D, D, and their tour-Way valves as shown in Fig. 5, combined-With -an entirely distinct and separately controlled radiator so as to form a system adapted tor the heating of compartment cars, as this' arrangement is specifically claimed in my pending application Serial No. 500,478, tlledlJune 7, 190s. H

I claim: y L? l. The combination With a railway car, ot a train pipe, a primary radiator supplied with `steam from -said train pipe, an independent secondary radiator, both arranged so as to heat the same apartment, said secondary radiator consisting of one or more radiator-units, a single automaticcontrolling device for controlling the supplyiot vsteam to sia'idiradiators, andv means operated by a single handle for admitting steam to or ranged with vrespect to said primary radiator, so that steam may be circulated either excluding the same fromtsaid secondary radiator, said means being Voperatively arthrough the primary radiator alone or" radiator consisting of one.

a-single automatic of steam'to said radiators, comprising a thermostat and a valve actuated thereby,

and means operated by a single handle for admitting steam to or excluding the same from said secondary radiator, said means being `operatively arranged with respect to said primarytradiator and said thermostat, so that the steam may be circulated through the primary radiator alone and thence directly to the thermostat, yor through both the primary radiator and a secondary radiator .unit inseries, and thence to the thermostat,

as desired.'

\ A heating system. comprisinga source of supply of heatingmedium, supply and dischargeV pipes, a primary radiator and a secondary radiator, said secondary radiator consisting of one or'more radiator units,

and a four-way valve interposed between the' return end of said primary radiator andthe inlet 'and return ends of said secondary radiator and said discharge pipe, adapted to put in communication with each other either the return end of the primary radiator and said discharge ipe or the return end of theprimary ra iator and the inlet end of `the secondary.=:radiator and, at the same time, the return-end of the secondary radiator and said discharge pipe. v

4. A heating system comprising'a source of supply of heating medium, supply. and discharge pipes, a primary radiator and'a ,secondary radiator exhausting throughfsaid discharge pipe, said secondary radiaton consisting of one or more radiator'units, a foureway valve interposed between the return end of one ofsaid radiators and the inlet and return end of the other of sa`id.ra diators and said discharge'pipe, adapted to put in communication With each other either the return end of the primary radiator fand said discharge pipe, or the return end of theprimary radiator and the inlet end of ,the secondary lradiator and, at `the same time, the return end of the secondary radiator and said discharge pipe; a common controller for said radiators comprising a thermostat located in communication with the discharge pipe and a Valve actuated thereby which are arranged to contro-l the flow of heating medium throughsa-id su'pljilyjpipe.- systemcomprismg a som-cev 5.` A heatin neating medlum, supply and discharge pipes, a primary radiator, a secondary radiator consisting of one or ,I hore radiator units, la four-Way -valve interposed vbetween therreturn endof said primary radiator and the inlet and return ends of said secondary radiator and said discharge'pipe,

adapted to put in communication with each other either the return end of the primary radiatorgnd said discharge pipe,orthe return lend ofthe primary'radiator-andthe inlet end. of the secondary radiator and, at .the same`l time, the return end of the secondary radiator and said discharge pipe a common controller for said radiators comprising a thermostat llocated in communication with the discharge pipe and'a valve'actuated thereby, arranged to control the tloW of heating medium through saidsupply pipe, anda sec-v ond four-Way valve interposed between said radiators and the supply and discharge pipes adapted to put in communication with each other the supply pipe andthe inlet end ot the primary radiator and the return end ot one of said radiators and the discharge pipe;

or to close communication between the supply pipe and the radiators and open communication directly between the supply and discharge pipes, for thev purpose specified.-

6. Aheating system comprising a source of supply of steam, a primary radiator, an

independent secondary radiator comprising one or more radiator units, said radiators arranged to heat the same apartment, said primary -radiatorbeing in direct communication With said source of supply of steam, and means operated by a single handle .whereby steam from. the primary radiator may be'direetedthrough 'said secondary radiator .orY excluded therefrom as desired.

7. A heating system comprising a-source of supply of steam, supply and discharge pipes, a primary radiator, an independent secondary' radiator, one of said radiators y .being arranged to receive s'team from said supply pipe, means operated by a single handle and adapted either to open communication between the return end of said primary radiator andthe inletvend of said secondary radiator and -the ret-urn end ot said secondary radiator andthe discharge pipe, or to close communication between sa id radiators and open communication between the discharge pipe and the return end ot the radiator which is inA communication with the supply pipe. j

S. A heating system comprisiugfa source of supply of steam, supply and. discharge pipes, a primary radiator, a secondary radiator, one of said radiators being arranged to receive steam `from said supplyI pipe, means operated by a single handle and arranged, when in oneposition, to open commu@ nication between the radiator which receives .steam from the 'supply pipe and the inlet.

end of the other o fsaid radiators and bctween thc return end of said other radiator and the 'dlschaifgc pipe and, when in another position, to-,open communication between.v the first-named of said radiators and said` discllarge'pipe and to close both the inlet and discharge ends of the other of said radiators.l 4 ./,Qr A heating system comprising a source of supply of steam, supply and ldischarge ..\pipes, a prilnary radiator, a secondary radiator, one of said radiators being arranged i to receiveV steam from said supply pipe,

Y in ano-ther position, to close both` 'theinlet p and discharge ends of 'said last named ra means arranged, when in one position, toY

open communicationbetween the return end of said lastfnamed radiator and, the. inlet end of the other of said radiators and between the return end of said other oifV radiators rand the dischargepipe, andgfvheii diator and open commui'i'ic'ationbetween the return end of said first namedV radiatrand: said discharge pipe and, at the Sametime, to

- open communication between the atmosphere and the radiator, which is otherwise so closed atboth ends, for the purpose speciof aheating system,A therefor comprisinga train pipe, a primary radiator and a secondary radiator which' are arranged along one side of the' car', one of which radiators is in constant communication with the train pipe whenever said heatingsystem is in operation, and means operated by a single member whereby at one position of said operating member the medium is discharged from said last'named radiator and excluded from the other radiator and, at another po*- sition ot said operating member, the heating medium, after passing through said first named radiator, is caused to passimmediately through the other of said radiators..

l1. The combination with a railway car,

of a heating system therefor comprising a.

train pipe, a primary radiator and a secondary radiator extending lengthwise of the car at one side thereof, common supply vanddischarge pipes with whichsaid radiators are adapted to be in communication, a controlling deyice comprisinor a Valve in said common supply pipe anda a thermostatin communication with said commonidischarge pipe, means whereby said radiators may be short circuited and the steam from the sup' ply pipe directed into thev discharge pipe, and a valve device arranged so-as to put said radiators into communication with each other serially, said valve device beingprovided with means operated by a single member for excluding steam from one of said .f radiators.

12. The combination with arailway car, of a train pipe carrying steam at high but variable pressures, a' primary radiator and a secondary radiator supplied withsteam from said trainpipe and located in said car, a discharge pipe, a four-way Valve interposed be'tween the return end of said primary radiator and the inlet and return ends of said secondary radiator and the discharge pipe, adapted to put in communication with each other either the return end 'of the primary radiator and said discharge pipe, or the return end Ioi" the primary radiator and the inlet cud rd the secondary radiator and, at the same time tlre return end of the seclatorsf, asy thecase ymay be.

10. The combination with a railway car,v

andvmeansfof-niaintaining a constant pressure ofsteamjin .one or both of said radi- 13. ation with la railway oar, 'jofja `trai'nfpipe carrying steam at high but ',Yariablepressures, a primary radiator .and gasecondary radiator in said car, suppliedV ,with steam fronrsaid train pipe, common supply and discharge pipes for said radiators, a four-way valve interposed between the returnend of the primaryradiatorand the inlet and return endsofthe secondary radiator and the discharge pipe, adapted to put in y communication with 'each other either the return end ofthe primary radi- 'ator and Ysaid dischargepipeor thereturn so'V 14. The combination with a railway car, I

of a heatingsystem` therefor comprising a train pipe carrying steam at highbut variable pressures, a primary radiator and a secondary radiator supplied with steam from said train pipe, which radiators are arranged along the side of the car, means operated by a single member and arranged so as to lpermit at allftimes the iow of steam through .one of said. radiators'and which is 'l adapted at will to cause the steam to flowserially through said radiators or to wholly exclude steam from said secondary radiator; and meansy whereby thefsteam may be maintained at a definite pressure either in said primary radiatoralone or in both of said radiators, as the case maybe,

15. The combination `w1th a vrailway car,

vof a 'heating system therefor comprising a 4train pipe, a primary radiator and a secondary radiator adapted to be supplied with steam, from saidtrain pipe and arrangedso as to heat the same part of the car, and aA Valve device, provided with a single loperating handle,.which is arranged so as to permit the ow of steam -`at all times from the train pipey through one of saidV radiators, while excluding steam from the other of said radiators and by which at willZ the. steam, may be caused to iiow through bothof said radiators in seifiesbyv adjustment of the po-. sition of said operating handle. A

16. A heating system comprising a source` of supply of steam, a primary radiator which is in constant communication with said source ot steam, a secondary radiator which is separate therefrom, and means opwhich, iii one position, said secondary radii.

ator may 'be put in communication with said primary radiator, 4so that the steam from said supply may iow through said radiators in series, and, in another position,

steam will be vexcluded from the secondary radiator, While permit-ted to iiow through the primary radiator.

17. In a heating system, the combination with `a source of supply of steam, of a supply pipe in coiriiiiuiiication with said source' of supply' of steam, ay discharge pipe, a pri! mary radiator, a secondary radiator, a valve device operated by a single operating inember, associated with each of said radiators, the valve device for said primary radiator being adapted to direct the steam `from said 'supply pipe either through said primary radiator and thence to thenext succeeding valve device or immediately to the discharge pipe, while excluding steam from said primary radiator, the valve device of said sec- I ondary radiator being adapted to direct steam received by itjeither through said 'secondary radiator and thence to the discharge pi'pe or to exclude steam from said secondary radiator and direct the steam 4to the dischargepipe, as desired.

Aso

18. In a heating system, the combination with a'source of supply of steain,.of a supl ply pipe in communication with said source of supply of steam, a discharge pipe, a primaryl radiator, a separate secondary radiat'or, a separate valve device operated by a single operatingr member, associated with eac of said radiators, the valvedevice for said rimary radiator being adapted to direct t e steam at Will from said supply pipe' either through said primary radiator and thence to the next succeeding valve device or directly to the discharge pipe while excludinl steam from said primary radiator, the va -ve device of saidsecondary radiator being adapted at will to direct the steam received by it either through theseeondary radiator andthence to the discharge pipe or to exclude steam from said secondary radiator and direct the steam to said discharge pipe, and means for maintaining a definite pressure of steam in each of said radiators when under steam. Y

19. The combination with a railway car,

of a heating system therefor comprising a source of supply of heatingmedium, a prin mary radiator and a rsecondary radiator adapted to receive medium therefrom, saidV primary radiator extendingthrough the ear engthwise thereof and said secondary ra- -dia-tor arranged adjacent to the primary radiator, but extending through only a por-A tion of the distance through which the'pri- `mary radiator-extends, said radiators being y arranged and controlled so that the medium may be circulated through the primary ra- 'diator clone or through both of said` radiaradiator, the inlet end of a secondary radiaJ radiator unit and the discharge pipe, or to radiator and the secondary radiator unit in question and open communication between the primary radiator and the discharge pipe.

21. Aiheating system, comprising a source of supply ofvheating medium, supply and discharge pipes, a primary radiator and a secondary radiator adapted to be supplied with steam from said supply pipe'and ex hausting through said discharge pipe, said secondary radiator consisting of two or more radiator units arranged so as to heat tlie'same region heated by the primary radiator, a` four-way valve for each of said.

-case either to put in communication with each other the return end of the primary radiator and the inlet end of a'secondary radiator unit 'and the return -end of the sec ondary radiator unit and the discharge pipe, or to close communication between the primary radiator and the -secondary radiator unit in question and 4open communication charge pipe; and an automatic controlling device comprising a valve in the supply arranged to actuate said valve.

22. A heating system comprising a soiiicc discharge pipes,-a primary radiator, a secondary radiator consisting of two or more region as heated by the primary radiator,

'put in communication with each other the inlet end :of a secondary radiator uiiit and i'liiit and the discharge pipe or to close open communication ybetween the primary radiator and the discharge pipe; an automatic controlling device comprising a valve aia secondary radiator units adapted in each `case either to put in communicationA with" each other the return end of the primary close communication between the primary;

vsecondary radiator units, adapted in eachV between the primary radiator and the dis-l lpipe and a thermostat in the discharge pipe radiatorunits, arranged to heat the samev a four-way valve for each of ,the secondary radiator units adapted iii cach case either to `thereturn end" of the 4secondary radiatorl con'imunicatioii between the primar)7 radi-- atoi and said secondary radiator unit and tor unit and the return end of the secondary of supply oflieating medium, supply and'l lreturn end of the primary radiator and' the' in the supply pipe and a thermostat in the discharge pipe arranged to actuate said from said source,

valve, and a four-Way valve interposed betiveen the supply and discharge pipes and said radiators adapted'either to put they supply and discharge vpipes respectively intof communication with `said primary radiator or with said primary radiator and-onev or more of said secondary radiator units, according to .the position of said first-mentioned four-Way valves, or nicationbetween the supply pipe and said radiators and ktoopen communication directly between the supply pipe and the dis= charge pipe, for the purpose specilied.

A23. A heating system comprising a source of supply of steam, a primary radiator and a secondary radiator supplied with steam consisting of a plurality of secondary radi ator units separate from the primary radiator and from' eachother, a discharge pipe,

. secondary radiator unit. or With tliedis and means associated With each of said secondary'radiator units whereby, at one position of said means, the inlet end of the secondary radiator unit With which, it is associated is placed in communication With the return end'of the prima-ry radiator and the return end of said secondary radiator unit isplaced in communication ivith the discharge pipe or with the neXt succeeding secondary .radiator unit, as the case may be, and, at another position of said means, communication between the secondary radiator unit` With which it is yassociated and the primary radiator is closed and communication is opened between the return end of the primary radiator and the succeeding secvondary radiator unit orbetiveen the primary radiator and vthe discharge pipe,` as the case may be.

24. A heating system comprising a source of' suppl-y of steam, a primary radiator and a. secondary radiator supplied With steam from said source, said secondary radiator consisting of .a plurality of secondary radiator units separate from the 'primary radiator and from each other, a discharge pipe,

and means associated with each of said secoiidary radiator units whereby, in one position of said means, the inlet end of the secondary radiator unit associated therewith' is placed iii communication with the return end of the primary radiator, and the return eiid of said secondary vradiator unit is put in communication with the discharge pipe or with the next succeeding secondary radiator unit, asthe case maybe, or, in another position of said means, the inlet and return ends of said secondary radiator unit with which it is associated are closed thereby and lteh return end of the primary radiator is placed in communication with the next succeeding charge pipe, as the case may be.

to close commuj said secondary radiatorloperating member,

25. The combination with a railway car,

of a heating vsystem therefor comprising a train pipe, a primary radiator and a sec ondary radiator supplied with steam from said train pipe, said secondary radiator consisting or tivei secondary radiator unitsl .aiate from each other, a discharge pipe= and a 'valve device,'having a single operating handle, associated with each 'of said secondary radiator units, by means of Which the steam from the primary radiator may either be dischargedto the discharge pipe and excluded from said secondary .radiator or may be circulatedthrough either of said secondary radiator units and excluded vfrom the other of' said secondary radiator units, or may be circulated through both of said secondary radiator units in series, according to the position of the operating handles of said valve'devices.

.26. In a heating system, the combination with a source of supply of steam, of a supply 'pipe in communication with said source of supply of steam, a discharge pipe, a

primary radiator, a secondary radiator comprising tivo or more secondary radiator units, a valve device operated 'by a single associated with said primary radiator and ivitheach of said sec -ondary radiator units, the valve device for said primaryiradiator being adapted to direct the steam through said primary radiator and thence to the next'succeeding valve device or immediately to the discharge pipe,

ivhile excluding steam 'from said primary radiator; the valve device ofeach of said secondary radiator direct itlie steam through its radiator unit received by it either and thence to the discharge pipe or to the lnext succeeding unit, as the case may be, or to exclude the steam from its said unit and direct it immediatcly to the discharge pipe or to the next succeeding unit, asthe case may be. y. 27. In a heating system, the combination with a source of supply of steam, of a supply pipe in communication With said source a discharge pipe, a primary radiator, a secondary radiator comprising two or more secondary radiator units, a valve device associated With said primary radiator and with each Aof said secondary radiator. units, each said valve device being operated of supply,

v4by a-single and separate handle, the valve device for said primary radiator being adapted to direct the steam from said supply pipe either through said primary radiator and thence to the next succeeding valve device or immediately to the discharge pipe, While excluding steam romsaid primary radiator; the valve 4device of each of said secondary radiator units being adapted to direct the steam received by it either units being adapted to iis through'its radiator unit and thence to thev discharge pipe or to the next succeeding Corrections in Letters Patent Nol 987,565.

unit, as the-case may be, or to exclude the steam from its said unit and direct it imnicdiatcl)7 tothe discharge pipe 'or to the next sl'tcceeding unit, as the case may be;

'and nxt-ane, for maintaining a definite pressure oil steam in eachof said units When under steam.

28. The combination with a railway car, of a heating System therefor comprising a source of supply of heating medium, a primary radiator arranged to extend through the car lengthwise thereof, a secondary radiator consisting of a ,pluralityI of secondary radiator units each of which 1s arranged adjacentl the primar)-1 radiator, but .extends 5 onlyv for a portion of the length of the same., said radiators arranged totreceive heating medium from Said lSource of supply, said priuiaryaud secondary radiators being'an rangtalaml controlled so that the medium ma.' he t'rt-ulaltal through the primary radiator alom` or through the primary radilttor and secondari radiator units' serially, Iuzl e-:lu he circulated through tht` secondary radiator uuit y only wluu'ithe primary radiator is supliiied with heating medium. .t

zheing,arranged and controlled so that the vmedium may he circulated through the pri- 29. The combination with a railwayT car,

of a heating system therefor comprising a source'of su 3 l of heatinor medium a rimary radiator and a secondary radiator arranged to receive medium therefrom, said primary radiator extending through'the car lengthwise' thereof and saidSecondary radiator consisting of a plurality ot' secondary radiatm units arranged adjacent to said primary radiator hut which in each case extend through the car for only a portion ot' the length oi. the prnnary 1'ad1ator,'sa1d prima@T radiator and secondary radiatorv mary radiator alone or through thev primary radiator and ilu-(nigh a'n \"or all of the Secoudar).Y radiator n1\it's,'but can becircu-- lated through the Seconda-'ry radiator units only when supplied to the primary radiator and thence eeria'll)Y through such of the Seclitucssew ondary radiator units a5 may -be open.

' ,EGBERT H. GOLD.

Il'. L. llzon.

Copies o! this patent may be obtained for vc cents each, by addressing the Commissioner of Patents,

" Washington, D. C. i

fthe case in the Patent Office.

[anni] lt is herehjl eertiticd that iu [lettere latent No. 987,565', granted March 21, 1911, upon the application ot'lllglwrt lIl. (told, of (,fhicago, Illinois, for an improvement in,

Sleeping-Car-Heating Systems," erroreI appear in the printed Specification requiror should read of; .page 7;

line 61, the Word"teh should read t/ug; and that the `Said Lettere` Patent shouldl be read with these. corrections .therein that the same may conform to the record of Signed and sealed this 11th day of-April, D., 1911.

C. C. B ILLINGS,

Acting Commissioner 'of Patents.

Corrections in Letters Patent Nol 987,565.

unit, as the-case may be, or to exclude the steam from its said unit and direct it imnicdiatcl)7 tothe discharge pipe 'or to the next sl'tcceeding unit, as the case may be;

'and nxt-ane, for maintaining a definite pressure oil steam in eachof said units When under steam.

28. The combination with a railway car, of a heating System therefor comprising a source of supply of heating medium, a primary radiator arranged to extend through the car lengthwise thereof, a secondary radiator consisting of a ,pluralityI of secondary radiator units each of which 1s arranged adjacentl the primar)-1 radiator, but .extends 5 onlyv for a portion of the length of the same., said radiators arranged totreceive heating medium from Said lSource of supply, said priuiaryaud secondary radiators being'an rangtalaml controlled so that the medium ma.' he t'rt-ulaltal through the primary radiator alom` or through the primary radilttor and secondari radiator units' serially, Iuzl e-:lu he circulated through tht` secondary radiator uuit y only wluu'ithe primary radiator is supliiied with heating medium. .t

zheing,arranged and controlled so that the vmedium may he circulated through the pri- 29. The combination with a railwayT car,

of a heating system therefor comprising a source'of su 3 l of heatinor medium a rimary radiator and a secondary radiator arranged to receive medium therefrom, said primary radiator extending through'the car lengthwise' thereof and saidSecondary radiator consisting of a plurality ot' secondary radiatm units arranged adjacent to said primary radiator hut which in each case extend through the car for only a portion ot' the length oi. the prnnary 1'ad1ator,'sa1d prima@T radiator and secondary radiatorv mary radiator alone or through thev primary radiator and ilu-(nigh a'n \"or all of the Secoudar).Y radiator n1\it's,'but can becircu-- lated through the Seconda-'ry radiator units only when supplied to the primary radiator and thence eeria'll)Y through such of the Seclitucssew ondary radiator units a5 may -be open.

' ,EGBERT H. GOLD.

Il'. L. llzon.

Copies o! this patent may be obtained for vc cents each, by addressing the Commissioner of Patents,

" Washington, D. C. i

fthe case in the Patent Office.

[anni] ing correction as follows: Page l, line ,14, the word lt is herehjl eertiticd that iu [lettere latent No. 987,565', granted March 21, 1911, upon the application ot'lllglwrt lIl. (told, of (,fhicago, Illinois, for an improvement in,

Sleeping-Car-Heating Systems," erroreI appear in the printed Specification requiror should read of; .page 7;

line 61, the Word"teh should read t/ug; and that the `Said Lettere` Patent shouldl be read with these. corrections .therein that the same may conform to the record of Signed and sealed this 11th day of-April, D., 1911.

C. C. B ILLINGS,

Acting Commissioner 'of Patents.

Corrections n Letters Patent No` lt is hereby rvrtitiwrl that il lwth're lntcnt No. 987,565, granted March 2l, 1911, upon tht` upplicutiuh nl' lighf-rt ll. (iolfl, of (Vhicztgo, Illinois, for an improvement in Sleepirig-Car-Hernting Systems," arrow,` appear in the printrrl specification requirlag'c l, liml-l. thv word or` should read Qf; page 7, i Patent should the same may conform to the record of ing correction as l'ulluvis:

line 6l, the word tch shoulrl ruim f/lff.' :mtl that the laid Letters be read with these currections therein that the case in the Patent Oflice.

Signed and sealed 7this 11th day of April, A. D., 1911.

(j. C. BILLINGS,

[SEA 11.]

Acting Commissioner Patents. 

